Title:
ELECTRO-ACOUSTIC CONVERTER AND ELECTRO-ACOUSTIC CONVERTER UNIT
Document Type and Number:
WIPO Patent Application WO/2022/215558
Kind Code:
A1
Abstract:
This electro-acoustic converter comprises a port for guiding the component of at least a part of the frequency band of sound emitted from a first diaphragm in a direction opposite a direction in which a front face 38A of a second diaphragm faces, to an external space on the front-face side of the second diaphragm. The electro-acoustic converter is configured such that, by providing the port, the acoustic pressure of synthesized sound at or around a cross-over frequency of emitted sounds from the first diaphragm and the second diaphragm when vibrated by means of a drive unit is greater than or equal to an acoustic pressure at the cross-over frequency of emitted sound only from one of the first diaphragm and the second diaphragm.
Inventors:
SUGATA HIROSHI (JP)
Application Number:
PCT/JP2022/014680
Publication Date:
October 13, 2022
Filing Date:
March 25, 2022
Export Citation:
Assignee:
FOSTER ELECTRIC CO LTD (JP)
International Classes:
H04R1/28; H04R1/30; H04R7/04; H04R9/02
Foreign References:
| JPH1093672A | 1998-04-10 | |||
| JP2005354297A | 2005-12-22 | |||
| JP2010157885A | 2010-07-15 |
Attorney, Agent or Firm:
TAIYO, NAKAJIMA & KATO (JP)
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